Automatic weighing-machine.



No. 694,936. Patented Mar. H, |902.

T. C. BAKER.

AUTOMATIC WEIGHING MACHTNE,

l (Application fixed May 15, IDOLT (N0 M0dl 2 sheets-sheet l.

@ffm /f/mw t n MQ M l@ MMC@ @Hoz/mq No. 694,936. Patented Mar. H,l |902.

T. C. BAKER.

AUTOMATIC WEIGHING MACHINE.

(Application filed May 15, 14901.)

2 Sheets-Sheet 2.

(No Model.)

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UNTTED STATES PATENT OFFICE.

THOMAS C. BAKER, OF VASHINGTON, KANSAS.

AUTOMATIC WElGHlNG-MACHINE.

SPECIFICATION forming part Of Letters Patent No. 694,936, dated March 11, 1902.

Serial Noi 60,375. (No model.)

To @ZZ whom, 'Lt may aciwcrt:

Be it known that I, THOMAS C. BAKER, residing in Washington, county of iVashington, State of Kansas, have invented certain new and useful Improvements in Automatic lVeighing-Machines and I do hereby declare the followingto be a full and clear description thereof.

My invention relates to weighing-machines.

The objects of my improvements are to automatically weigh a predetermined quantity of grain, liquid, or other pulverulent material which is capable of flowing` into and loeing discharged from a hopper' carried on a scale-beam.

.A further object is to adapt an invention of this character whereby a series of bins may be arranged to discharge into the same hopper, with selective mechanism for discharging any one of the bins into the common scale-hopper in weighing any particular amount from any one of the bins.

For these purposes my invention consists of the construction and combination of the various parte, the details of which will rst be described and the novel features then set forth and claimed.

Figure 1 represents a front elevation of a three-bin cabinet to which l have applied my invention. Fig. 2is a side elevation and partial section, with parts broken away, ot the operative parts of myimprovements. Fig. 3 is a bottom plan view of the slide mechanism for three bins. Fig. i is a front elevation of he operative parts of the invention with the bottoms of the bins shown in section. Fig. 5 is a plan view of the hopper-slide mechanism, the lower end of the hopperbeing shown in cross-section.

Hopper 1 is pivoted at 2 to a vertical frame The scale-beam el is pivoted at 5 to the frame 6, and the hopper-carrying frame 3 is pivoted at 7 to the inner end of the scalebeam. The outer end of the scale-beam is provided with a link S, to which is pivoted at 9 the scale-arm 10, carrying the usual slideweight 1l thereon.

12 is a counierbalance weight movable upon a threaded counter-arm 1S to provide linto the common hopper 1.

the proper adjustment for the parts connected with the scale-beam.

The scale-beam is pivoted at 1e to the end of an arm projecting from frame (i.

The lower end of the oscillating frame 3 is connected pivotally by a link 15 to the frame 6 to preserve the vertical position of the frame 3 in its oscillating movements.

The bottom 1G of the hopper 1 is provided with a valve 17, pivoted at 1S and carrying a counterbalance-weight at 19, the latter being adjusted so that when the hopper is empty the valve 17 will close the mout-l1 of the hopper.

2O is a frame supported by the hopperframe.

2l is a frame adapted to slide upon the frame 2O and carries an arm 22, which normally rests under the valve 17 and holds it in its closed position.

23 is a sliding operating'rod carried by the frame 6 and provided with a spring 24 for normally throwing the rod 23 outwardly. is a link pivoted at 26 tothe arm 22 and connected with the slide 21 at one end and pivoted at 27 to the rod 23 at the other.

2S is a chute which receives the discharge from the hopper through the valve 17. This chute is pivoted at 29 and affords compensation for the length of vertical travel of the hopper.

In the present instance l have shown three bins 31, 32, and 33, all arranged to discharge I may use, however, only one bin or two, or more than three, if desired.

3l, 35, and 36 represent slides which control the discharge of the bins 31, 32, and 33. These slides are arranged to be severally operated, whereby any one or more of the same may be discharged in to the hopper at the same time.

37, 3S, and 30 represent operating-rods for controlling the slides 3i, 35, and 36. The

slides are adapted to reciprocate upon rods or ways e0.

el and 42 represent links pivcted to each other by a slotted sliding connection, and also The normal position of at i3 to the frame G.

' links 4l and 42 are as shown in dotted linesin Fig. 3, the pivot 44 uniting the same. Thesey links carry projections 45, and each slide is provided with a push-rod 46, which is adapted to engage the stops 45 and move the links 4l and 42 from the position shown in dotted lines to the full-line position, Fig. 3. 47 is a yoke-piece having sliding bearing 48, which engage the pivot 7 on the scalebeam. The central portion of yoke 47 is journaled at 49to the bins or any stationary part of the frame. Yoke 47 carries a detent or latch 50, which is. adapted to engage the links 41 and 42 and hold them in the position shown in full lines in Fig. 3 when anyone of the bin-slides are first opened.

5ly represents springs having av tendency to move the links 4l and 42 into the position shown in dotted lines when the latch 50 is released.

The operation is as follows: When it is desired to weigh a given quantity ofmaterial in any one of the bins-say bin 3l-the weight 1l is set upon the scale-arm 10. The pushrod 37 is pushed inward, as shown in Fig. 3, and being rigidly connected to slide 34 and push-rod 36 the latter push-rod engages a stop 45 on the links 41 and 42 and moves the links to the position shown in full lines in Fig. 3. The hopper 1 being raised has elevated the yoke 47 and'latch 50, so that the links 41 and 42 ride from the latch 5,0 and are held thereby. The slide 34 having thereby uncovered the bin 31 the material therein flows through the bottom of the bin into the hopper until the Weight of material in the hopper overcomes the weight 1l, when the hopper falls and carries with it the yoke 47 and latch 50, thereby releasing the links 41 and 42 and permitting the springs 51 to move the links and slide 34 back over the dischargeopening of the bin 3l. The same operation is gone through when either the push-rods 38 or 39 are operated to cover the discharge-orifice of the' bins 32 or 33. The arm 22 is normally under the valve 17 and holds the valve closed and the contents of the hopper 1 intact until it is desired to discharge the same. This is effected at any time by pushing in the rod 23, which withdraws the arm 22 from under the valve 17, and the contents of the hopper are discharged vthrough the chute 28. Any known means may be provided for holding the arm 22 out of engagement with the valve 17. The disposition of the parts may be such that when the stop 22 is carried to the rear of the valve and the material is flowing through the same theweight of the latter may act to prevent the spring 24 from moving the arm or stop 22 under the valve 17 until the latter has dis-y charged its contents. struction. v v

While I have described my invention in connection with the apparatus shown in the accompanying drawings, yet I wish it distinctly understood that I do not confine my invention to the details and devices herein shown, for the reason that I contemplate using my invention in connection with any set of apparatus which will come within the scope of the claims. -1

l prefer the latter con- What I claim as new, and desire to secure combination of a pivoted balance-arm, a hopper pivotcd to said arm at one end and a scalebeam at the other, a valve for closing the bottom of the hopper, a series 'of bins above the hopper, a slide for each bin, independent dis.- connfected mechanism for opening each slide, means for closing said slides, a latch adapted to hold open the slide-closing means, and connecting mechanism between the latch and scale-beam to release said latch when the hopper descends.

2. ln an automatic weighing-machine, the combination of a series of bins, slides controlling said *bins, independent disconnected mechanism for opening each slide, means fory closing said slides, a latch for controlling said slide-closing means, a pivoted balance-arm having a hopper at one end and a scale-beam at the other, and means connecting the slide and balance-arm for actuating the latch by the movement of the balance-arm.

3. In an automatic weighingsmachine, the combination of a pivoted balance-arm, a hopper pivoted to said arm at one end and a scale-` beam at the other, a bin located above the hopper, a slide controlling the discharge of the b in, an integral latch-.lever pivoted to the frame at one end yand to the trunnions of the hopper at the other, andl a mechanism connecting the latch and the slide.

IOO

4. In an automatic weighing-machine, the

combination of a pivoted balance-arm carrying a hopper, a pivoted valve closing the discharge end of said hopper, a linearly-moving reciprocating latch adapted to normally hold the hopper-.valve closed, and means for mov# IIO ing the latch out of engagement with the l valve. p

In testimony whereof I have aixed my signature in the presence of two witnesses.

THOMAS O. BAKER.

Witnesses:

W. M. DoNAHE, CHAs. S. L. BROWN. 

